Here you go, Matt - for you as well. Refute the following, and not just with blanket ad hominem dismissals and rejections, but actually employing reason, logic, common sense, specific arguments, sources, etc.,
What say you about the following:
No, we can't. Supply is not historical.
You really are off the deep end, Roy. Historical supply curves are created all the time. How else can supply curve analysis models be empirically tested, except in hindsight? Here is but one of a zillion examples:
Figure 2.2 illustrates the basic model of a perfectly competitive market. The horizontal axis depicts the total quantity Q of a particular good -- in this case corn -- that is supplied and demanded in this market. The vertical axis depicts the price P at which this good is sold. A market can be characterized along three dimensions:
commodity––the product bought and sold (corn);
geography––the location in which purchases are being made (the United States); and
time––the period of time during which transactions are occurring (the year 2009, when corn prices were about $4 per bushel).
That's not available supply NOW. Only THEN. A model using historical data. Real world.
Market supply curves as hypothetical models are not ever assumed to be prophetic or infallible by nature, nor are they created purely out of a vacuum. Otherwise they would be even more meaningless than many of them already are. The price and quantity components on
every supply curve are derived using real world numbers, real world approximations, which is why you will not see a supply curve like the one above for the year 2013 showing trillions of bushels of wheat trading at thousands of dollars per bushel. Only real world numbers need apply, and those real world numbers are derived ONLY from real world historical data.
"...supply is based on the assumption of such prices being transaction prices."
Which are often wrong, of course - as revealed when a supply curve analysis (projection) is later overlain with an actual historical supply curve (thus no "WOULD" to it, as seen only in hindsight).
Are you under the impression that supply schedule assumptions are real world edicts of some kind? Prophecies? Scripture? Infallible?
As it is projected, so let it be assumed as reality?
All goods trade at their price. If the price a good trades at does not affect the available amount, supply is fixed. As is the case with land.
All goods
[out of those that are traded] trade at their price, whatever that is. But that does not mean that all goods in existence trade.
I find it ironic that you took exception to supply not accounting for goods that are given away for free, and yet you can't even acknowledge goods that aren't traded or given away at all, at any price! Not logical, Roy. Not "real world" at all. In a real world, chock full of "irrational" people, goods are traded, re-traded, given away, thrown away, stored away temporarily, and even
hoarded.
They are "able and willing" to sell all they have at any price, by definition, because its price IS by definition what the whole supply sells for.
1) Gibberish - "able and willing" to sell "all they have at any price" -- is not the definition of supply, and not what happens in the real world. There is ALWAYS a quantity component - a VARIABLE - to supply, which has NOTHING to do with the entire quantity in existence, but only the entire Quantity Supplied at all points on a schedule or curve.
2) "price is by definition what the whole supply sells for" is a semantics sleight-of-hand and question-begging game on your part. To even refer to something as "whole supply" constrains it,
by definition, to only those quantities that owners were actually WILLING to offer for sale at that price. Thus, saying "price is by definition what the whole supply sells for" is like saying "
100% of all doctors who agreed were in agreement." Yep. All of them. Every one of them -- out of those who agreed, that is. The doctors who didn't agree are not part of that 100%. They're part of the 100% of doctors who did not agree.
If an owner sells 50 out of 100 widgets at a given price "the whole supply" (
of those 50 widgets) indeed sold at that price, because "the whole supply" is the Quantity Supplied. You want "the whole supply", by an impossible leap of logic, to also mean "the entire quantity in existence" - when that is NOT what it means.
The whole amount in existence sells for its price.
Gibberish, incorrect, and has no absolutely no bearing whatsoever on the real world.
As of now the spot price of silver is $30.73/oz. - that is its market price. And guess what? I and MILLIONS OF OTHERS were
able-but-not-willing to make ANY of our quantities available at or anywhere near that price. All the silver that DID sell at that price did in fact sell at that price (100% of silver that sold at that price sold at that price). But
only those quantities at that particular time at that particular price - NOT the "whole amount in existence". It is not even possible for the "whole amount in existence" to be sold at that price. Because that would take time, and that would only be the price on the leading edge, as the FIRST quantities sold and were absorbed at that price. LONG BEFORE the entire quantity sold, however, the price would CRASH. Thus, that would no longer be the price at which the remaining quantities sold. Even then, you COULD fit all of that onto an historical supply curve, which showed the quantities that sold at different prices. But to say that it accounted for the total quantity in existence would require that the total quantity in existence actually be traded. That's not real world at all.
In the case of produced goods, the amount in existence will increase at a higher price. The amount of land won't.
That is true. In the case of
produced goods,
the total amount in existence will TEND to increase at a higher price.
And so will the supply, which we don't ever erroneously conflate with the total amount in existence, since that is not now, nor has it ever been, the economics definition of supply.
The
total amount extant of land, works of dead artists, historical trading cards, minted coins from other eras, etc., will not and cannot increase, but
the SUPPLY will definitely vary - as it does every day - according to price.
Welcome to the world of
circulation, Roy, as the same things are CIRCULATED - SUPPLIED AND RESUPPLIED as Quantity Supplied - over and over again, at both quantities and prices that are always variable,
never fixed, ceteris paribus.
The quantity
of goods produced will tend to vary according to price. However, there are durable "things" that are neither produced nor are they consumed, which are fixed in
total quantity extant,
but which are not fixed in supply (the economics definition ONLY). These are not produced, but they do
circulate, and that supply (which is, at all times,
the amount that owners are willing to make available for sale across a range of prices), is
ANYTHING BUT FIXED. These quantities can and do vary according to price, and without regard to their deviations from the usual patterns and assumptions of Marshallian or Ricardian supply and demand or price theories as they relate to produced goods.